Maybe you're talking about cookies rather than passwords? If you mean that when you use the browser outside the sandbox, it already remembers the web sites that you logged into to, then we're probably talking about cookies and not passwords.

Since both are installed outside of sandboxes, then I assume that each one has its own profile folder and files.
And since you use the same sandbox for both of them, you can use these settings for that sandbox and both Firefox and Nightly will allow cookies and passwords to be saved outside of the sandbox:

gibson58 wrote:Is it safer when the browser is installed in the sandboxie?

No, it's just as safe.
If the browser is inside of a sandbox then its files and Registry changes would all be stored in the sandbox, and it would be easy to delete everything just by deleting the sandbox contents.
There would not be a reason to allow cookies, passwords, bookmarks out of the sandbox in that case, since those profile files only exist inside of the sandbox.
When a browser is installed inside a sandbox, if it gets infected by malware you cannot just delete the malware from the sandbox without also deleting the browser and all of your extensions and settings.
So having the browser outside of the sandbox and deleting the sandbox contents after each use is the better way.

I´m really positively surprised how friendly and helpful people are in this forum. Great

I have a question also: I use Kaspersky Pure and there´s a password manager intergrated. But when I fill in a password in Internet Explorer running sandboxed, the usual pop up window (asking me to add the password to the password manager) doesn´t pop up?

Can someone tell me how to integrate that password manager into my sandbox? It´s annoying to enter all the passes again and again each day...

If someone knows how to integrate KeePass I´m willing to check out that program also, if I just get some sort of password manager again...